One of the names of Viṣṇu (Vishnu). Viṣṇu Sahasranāma Stotra (Visnu Sahasranama Stotra; hymns praising the thousand names of Viṣṇu) we find acala (achala) uttered as one of the names of Viṣṇu. Similarly, in Mokṣadharmaparva (Mokshadharmaparva) in Śantiparva (Shantiparva) of Mahābhārata (Mahabharata) Acala is one of the two hundred names of God which are uttered by Nārada (Narada). The one who never strays from the absolute essence of his divine natural-form, the one who never strays from the glory and the grandeur of his divine might, and the one who never moves from his enlightening superior wisdom is considered to be acala (immovable). It is because of these qualities that Viṣṇu is famous as Acala.